Calyx. Perianthium duplex; exterius triphyllum, angustius; foliolis cordatis, acutis, persistentibus; interius monophyllum, semiquinquefidum, majus, latius, persistens.
Corolla. Petala quinque, obcordata, præmorsa, plana, tubo staminum basi affixa.
Stamina. Filamenta numerosa, inferne coalita in tubum, in hujus apice et superficie secedentia et libera. Antheræ reniformes.
Pistillum. Germen orbiculatum. Stylus cylindraceus, brevis. Stigmata plurima, setosa, longitudine styli.
Pericarpium. Capsula subrotunda, composita e loculamentis pluribus, (tot quot stigmata) bivalvibus, virticillatim inarticulatis circum receptaculum columnare, tandem dilabentibus.
Semina solitaria, rarius duo seu tria, reniformia.
Empalement. Cup double; the outer three-leaved, narrower; leaflets heart-shaped, sharp, and remaining; the inner one-leaf, half five-cleft, larger, broader, and remaining.
Blossom. Five petals; inversely heart-shaped, appearing bit at the ends, flat, fixed to the tube of the chives at the base.
Chives. Threads numerous, united below into a tube, at its top and surface parted and loose. Tips kidney-shaped.
Pointal. Seed-bud orbicular. Shaft cylindrical and short. Summits many, bristle-shaped, the length of the shaft.